James alexander baeclat



(N Model.)

J. A. BARCLAY. AUTOMATIC HATCHWAY GUARD..

No. 372,057. Patented 0.01:. 25, 1887.

IUNITED STATES PATENT OEErcE.

JAMES ALEXANDER BAROLAY, OF ST. PAUL, MINNESOTA, ASSIGNOR OF ONE-HALF TO GEORGE B. WOODWARD, OF SAME PLAGE.

AUTOMATIC HATCHWAY-GUARD.

1 SPECIFICATION forming part of Letters Patent No. 372,057l dated October 25l 1887.

Application filed September 27, i886. Renewed July 6, 1887. Serial No. 243,592. (No model.)

To @ZZ 117mm, it' may concern:

Be it known that I, J AMES ALEXANDER BAR- CLAY, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Automatic Hatchway- Guards, of which the following is a specification.

This invention relates to the hatchways of freight-elevators in buildings; and it consists in the manner of constructing and arranging the mechanism whereby the doors covering said hatchway are automatically opened and closed by the elevator-platform in passing upward and downward through the different lioors, as hereinafter shown and described.

In the drawings, Figure lis a sectional side elevation of portions of two floors cfa building through their hatchways with my improvements attached to the hatchway-doors. Fig. 2 is a plan view on the line x x-of Fig. 1. Fig. 3 is an enlarged sectional side elevation of the guidefranie and traveler detached. Fig. 4 is a front view of Fig. 3. Fig. 5 is a crosssectional View on the line y y ot' Fig. 3. Fig. 6 is a front View, and Fig. 7 is a sectional side view, of the lower part ot' theguide-frame with the traveler removed. Fig. 8 represents the two parts of the frame of the traveler in perspective.

A represents portions of two floors of a building, and B B2 the hatchway-openings through which the elevator rises and falls.

C Cz are'the leaders or guides,between which the platform D runs up and down, and E Ez are the doors, hinged to the sides of the hatchway and adapted, when folded down, to close the hatchwayopenings completely, and when raised up to leave them entirely open.

In the drawings the doors E E2 are shown hinged to the same sides of the hatchway as that through `which the leaders C C2 pass,- the latter being cut away at a to permit the doors to fold up into them when raised. The bottoms of the doors will be provided with a seetion, b', of the guide b2 for the platform D', so that when the doors are raised up the sections b will lill the cut-awayr portions a and render the guide b2 continuous for the passage of the platform D. I do not wish to be liniited to this particular form of doors E E2, as I am aware that the doors may be arranged in many other ways. l

Attached to each of the leaders C C2 on opposite sides of each hatchway-opening is a guide-frame consisting of a cast-iron head block, F', having a chain or cable pulley, d', and connected by two angle-iron guide-bars, F2 F3, to a foot-block, F4, the latter also provided with a chain or cable sheave,d2,as shown. The two blocks F F4 are bolted or otherwise firmly secured to the leaders C O2, so that the faces of the guide-bars F2 F3 are about flush with the inner faces of the leaders and parallel therewith. The bars F2 F3 form guides between which atraveler is adapted to run up and down, this traveler consisting of a frame, e', having anti-friction rollers e2 ea journaled thereon on opposite sides of the bars F'Z F3, as shown, so that the traveler will move freely up and down between the guide-bars.

Pivoted atg to the lower end of the frame e is a bell-crank-shaped arm, e, having rollers e5 pivoted upon the sides of its upper end, and with rollers e6 upon the sides ofA its elbow, these rollers being adapted to run in Contact with the outer faces of the guide-bars F2 F3. In the outer end of the arm e* is another roller, el, adapted to project beneath the platform D', as shown, so that the platform will carry the traveler down with it. In the face of the footblocks F4' a cavity, h', is formed, into which the rollers e will run when the platform has carried the traveler down far enough, and thus enable the roller el to pass out from beneath the platform D'.

A chain or cable, i', is attached at i?, to eachV comiectiug-chains i', raise the doors E' E2. The length of the chains i will be so graduated that the rollers e" will come opposite the cavities h' when the doors E' E2 have been raised to a perpendicular position, and the rollers e, by moving backward into these cavities, will cause the arm e to turn upon its pivot g and allow the roller cT to pass out from beneath the platform D', and thus cause the latter to cease to act upon the traveler. Then the platform is free to pass on down through the hatchway, the sides D of the platform pressing against the roller e and holding the lower end of the arms e4 back into the cavities h.

Vhen the platform is rising, the bows D strike the doors E El and open them upward, this action of the doors in opening causing the chains i' lo he slackened and permitting the travelers to descend until the rollers deomeopposite to the cavities h', when they will move back into it and remove the rollers el back from the track of the platform, so that the latter can pass the traveler.

\Vhen the platform rises above the upper edge of the doors E' E2, the latter will fall inward and tighten up the chains i', and when the platform rises above the rollers eT theweight of the doors E' E-I will cause the traveler to rise and follow the platform upward, the rollers e passing ont of the cavities h' and the rollers el projecting beneath the platform, as before. Thus the doors close only with the same speed as the platform rises or falls. The arm e4 being pivoted about in the center of its upright member, when the rollers c pass into the cavities IL' the upper end of the arm will be projected outward slightly beyond the rollers c until the rollers c5 and cT are in line perpendicularly, as shown in the lower part of Fig. 3. The rollers ci cT are thus thrown in contact with and bear all the strains of the platform-frame DE in passing through the hatchway and prevent the platform from coming in contact with the other parts of the traveler. This is au important feature of my invention, greatly lessening the danger of breakage of the parts by severe strains, and avoids all Wear and friction upon the traveler except the small part borne by the rollers ci c".

Small rollers c5 may be set into the upper part of the cavities h to throw the rollers c outward when the traveler is required to rise upward, or a small inclined stud may be substituted for the rollers, if preferred.

The manner of constructing and arranging the guide-frame is also an im portantfeature of myinvention, as it combines great strength with lightness, eheapness, and durability.

Having thus described my invention, what I claim as new is- Meansfor opening and closing hatehwaydoors, comprising a platform, D', moving upward and downward through said hatchways, said platform having bows D to open said doors when said platform rises, guide-frames consisting of head-blocks F', having chainpulleys d', foot-blocks F, having chain-pulleys dl and cavities h', connecting-bars Fl F, travelers consisting of frame e', carrying anti-friction rollers e2 e3, bell-crank arms e, pivoted to said frame e' and carrying anti-friction rollers 65e and bearing'rollers el, and chains or cables i', connecting said frame e' with said hinged doors, all combined substantially as set forth.

In testimony whereofI have hereunto set my hand in the presence of two subscribing witnesses.

JAMES ALEXANDER BARCLAY.

XVitnesses:

C. N. WooDwaRD, H. S. WEBSTER. 

